Takane Kiku and Takane Ryuji, the offspring of a renowned global boxer, have each taken different routes in their boxing careers. While Kiku has inherited her father's skills and seeks to guide her brother, Ryuji despises the sport and endures constant harassment. In an effort to escape their suffocating hometown, they relocate to Tokyo, where Ryuji has a life-changing encounter with Kenzaki Jun, a talented young boxer. This encounter ignites a newfound passion for Ryuji, allowing him to master otherwise impossible techniques and conquer formidable opponents, ultimately leading to his rise to becoming one of Japan's most celebrated junior boxers.
